生土地坑窑入口门洞的构成及受力机理分析

Analysis of Compositions and Stress Mechanism of Entrance Door in Underground Cave Dwelling

生土地坑窑是深潜于黄土塬下的一种窑居形式,具有"冬暖夏凉"、保温隔热等生态优势,其中入口门洞是连接地坑窑院和塬上地面的唯一交通枢纽,它的空间构造比较复杂,其结构安全性关乎着整个窑居的安全,在地坑窑中占据着十分重要的地位。为全面探讨生土地坑窑入口门洞的构成和受力机理,进行了入口门洞的构成分析,采用数值分析方法建立了生土地坑窑的有限元模型,并对其进行计算,选取入口门洞有限元模块分析其受力变形规律,得到入口门洞的结构薄弱部位,为入口门洞的前期建造及后期维修加固提供了科学依据。

The underground cave dwelling is a kind of cave dwelling under the loess plateau,and it has the ecological advantages of“warm in winter and cool in summer”and heat preservation and insulation and so on.The entrance door is the only traffic hub connecting kiln yard and the ground,and its spatial structure is rather complex,and its structural safety is related to the safety of the whole cave dwelling,which plays an important role in the underground cave dwelling.In order to fully explore the composition and force-transferring mechanism of the entrance door in the underground cave dwelling,this paper analyzes the compositions of the entrance door,and establishes a finite element model of the underground cave dwelling using the numerical analysis method.This paper also carries out finite element analysis,and selects the finite element module of the entrance door to analyze its stress and deformation properties to get the weak parts,the results of which provide a scientific basis for the early construction and the later maintenance and reinforcement.